I cannot disagree with your conclusion or the validity of your information, but I take a little different view on the matter. Pick a high quality pistol that fits you and shoot the piss out if it till you shoot it like an extension of your body. Don't go below 9mm in caliber and don't go over 45 ACP unless it's a pistol for specialized use. Any high quality pistol will get you there, and Glock does qualify as high quality IMO. If you can put 10,000+ rounds through it without mechanical failure or multiple FTFs or FTEs it quality is good enough.

The key is shooting the piss out if it. I can give you the most pointable, reliable, and shootable pistol in the world, but if you are not practicing it might as well be a saturday night special. Practice is NOT standing at 7 feet slow shooting 50 rounds and then going home. Practice is drawing, shooting multiple rounds on multiple targets, moving, and reloading, and all under stress.

I have to throw this last piece in too. I have a friend who is a thorasic surgen. He has operated on way more shooting victims than I've ever seen. When he says 9mm will do it, but 45's make a mess out of the human body, I listen. Shoot what you shoot accurately first. Placement is key, but if you can shoot the 45 just as accurately, it never hurts to hedge your bets.